Index: Riskeer/DuneErosion/src/Riskeer.DuneErosion.IO/DuneLocationsReader.cs
===================================================================
diff -u -rf86a0fa3e10e4c856ed487aa00c5fe3b22f1bbd2 -re5db0c1cdef5ab7de48d221e76f99444c985bc8a
--- Riskeer/DuneErosion/src/Riskeer.DuneErosion.IO/DuneLocationsReader.cs	(.../DuneLocationsReader.cs)	(revision f86a0fa3e10e4c856ed487aa00c5fe3b22f1bbd2)
+++ Riskeer/DuneErosion/src/Riskeer.DuneErosion.IO/DuneLocationsReader.cs	(.../DuneLocationsReader.cs)	(revision e5db0c1cdef5ab7de48d221e76f99444c985bc8a)
@@ -66,7 +66,7 @@
                     readDuneLocations.AddRange(CreateDuneLocations(locationsData));
                 }
 
-                return readDuneLocations;
+                return readDuneLocations.ToArray();
             }
         }
 
Index: Riskeer/DuneErosion/test/Riskeer.DuneErosion.IO.Test/DuneLocationsReaderTest.cs
===================================================================
diff -u -r9e9976818f1b446948c3bf815cafe2e023f98ac1 -re5db0c1cdef5ab7de48d221e76f99444c985bc8a
--- Riskeer/DuneErosion/test/Riskeer.DuneErosion.IO.Test/DuneLocationsReaderTest.cs	(.../DuneLocationsReaderTest.cs)	(revision 9e9976818f1b446948c3bf815cafe2e023f98ac1)
+++ Riskeer/DuneErosion/test/Riskeer.DuneErosion.IO.Test/DuneLocationsReaderTest.cs	(.../DuneLocationsReaderTest.cs)	(revision e5db0c1cdef5ab7de48d221e76f99444c985bc8a)
@@ -43,8 +43,6 @@
             {
                 Assert.That(!string.IsNullOrEmpty(duneLocation.Name));
                 Assert.IsNotNull(duneLocation.Location);
-                Assert.IsNotNull(duneLocation.Location.X);
-                Assert.IsNotNull(duneLocation.Location.Y);
                 Assert.AreNotEqual(0, duneLocation.CoastalAreaId);
                 Assert.IsTrue(duneLocation.Offset >= 0);
                 Assert.IsTrue(duneLocation.Orientation >= 0);
Index: Riskeer/Integration/src/Riskeer.Integration.Plugin/Handlers/HydraulicBoundaryDataUpdateHandler.cs
===================================================================
diff -u -r7fc10264f0bb04fb75b3879b81dcb5ab8e7287f1 -re5db0c1cdef5ab7de48d221e76f99444c985bc8a
--- Riskeer/Integration/src/Riskeer.Integration.Plugin/Handlers/HydraulicBoundaryDataUpdateHandler.cs	(.../HydraulicBoundaryDataUpdateHandler.cs)	(revision 7fc10264f0bb04fb75b3879b81dcb5ab8e7287f1)
+++ Riskeer/Integration/src/Riskeer.Integration.Plugin/Handlers/HydraulicBoundaryDataUpdateHandler.cs	(.../HydraulicBoundaryDataUpdateHandler.cs)	(revision e5db0c1cdef5ab7de48d221e76f99444c985bc8a)
@@ -119,12 +119,7 @@
             assessmentSection.SetHydraulicBoundaryLocationCalculations(newHydraulicBoundaryDatabase.Locations);
             duneLocationsReplacementHandler.Replace(hydraulicBoundaryData.Locations);
 
-            var changedObjects = new List<IObservable>();
-
-            changedObjects.AddRange(GetLocationsAndCalculationsObservables(hydraulicBoundaryData));
-            changedObjects.AddRange(RiskeerDataSynchronizationService.ClearAllCalculationOutputAndHydraulicBoundaryLocations(assessmentSection));
-
-            return changedObjects;
+            return GetLocationsAndCalculationsObservables(hydraulicBoundaryData);
         }
 
         public void DoPostUpdateActions()